This is a list of the 100 most populous of the 3,144 counties in the United States based on the national decennial US census conducted on April 1, 2020, and vintage Census population estimates for July 1, 2023.
Many of the counties on the list include major cities or metropolitan areas in all parts of the United States. Six of the listed counties have consolidated city and county government, namely the City and County of Honolulu, Metropolitan Government of Nashville and Davidson County, Tennessee, City and County of Philadelphia, City and County of San Francisco, City of Jacksonville and Duval County, and City and County of Denver.Kings County, Queens County, New York County, Bronx County, and Richmond County are coterminous with the respective boroughs of New York City; they fall under the jurisdiction of the combined Government of New York City. Independent cities are not counted.
Many of the most populous counties listed are in Southern California, Texas, and New York, and roughly correspond to several of the most populous cities or municipalities in the United States. Counties in the Western United States are typically larger by area and therefore often have higher absolute populations even with comparable population densities.
List
This list includes the most populous US counties sorted according to both the 2020 official enumeration and 2023 vintage population estimates by the United States Census Bureau (USCB).
Rank | County | State | Land area | April 1, 2020 census | July 1, 2023 estimates | Mid-2020 to mid-2023 change | County seat | ||
---|---|---|---|---|---|---|---|---|---|
km2 | mi2 | absolute | % | ||||||
1 | Los Angeles | California | 10,509.87 | 4,057.88 | 10,014,009 | 9,663,345 | -350,664 | -3.5 | Los Angeles |
2 | Cook | Illinois | 2,448.38 | 945.33 | 5,275,541 | 5,087,072 | -188,469 | -3.6 | Chicago |
3 | Harris | Texas | 4,411.99 | 1,703.48 | 4,731,145 | 4,835,125 | 103,980 | 2.2 | Houston |
4 | Maricopa | Arizona | 23,828.26 | 9,200.14 | 4,420,568 | 4,585,871 | 165,303 | 3.7 | Phoenix |
5 | San Diego | California | 10,895.12 | 4,206.63 | 3,298,634 | 3,269,973 | -28,661 | -0.9 | San Diego |
6 | Orange | 2,047.56 | 790.57 | 3,186,989 | 3,135,755 | -51,234 | -1.6 | Santa Ana | |
7 | Miami-Dade | Florida | 4,915.06 | 1,897.72 | 2,701,767 | 2,686,867 | -14,900 | -0.6 | Miami |
8 | Dallas | Texas | 2,256.60 | 871.28 | 2,613,539 | 2,606,358 | -7,181 | -0.3 | Dallas |
9 | Kings | New York | 183.41 | 70.82 | 2,736,074 | 2,561,225 | -174,849 | -6.4 | Brooklyn, NYC |
10 | Riverside | California | 18,664.70 | 7,206.48 | 2,418,185 | 2,492,442 | 74,257 | 3.1 | Riverside |
11 | Clark | Nevada | 20,438.71 | 7,891.43 | 2,265,461 | 2,336,573 | 71,112 | 3.1 | Las Vegas |
12 | King | Washington | 5,479.29 | 2,115.57 | 2,269,675 | 2,271,380 | 1,705 | 0.1 | Seattle |
13 | Queens | New York | 281.10 | 108.53 | 2,405,464 | 2,252,196 | -153,268 | -6.8 | Queens, NYC |
14 | San Bernardino | California | 51,947.23 | 20,056.94 | 2,181,654 | 2,195,611 | 13,957 | 0.6 | San Bernardino |
15 | Tarrant | Texas | 2,236.74 | 863.61 | 2,110,640 | 2,182,947 | 72,307 | 3.4 | Fort Worth |
16 | Bexar | 3,211.12 | 1,239.82 | 2,009,324 | 2,087,679 | 78,355 | 3.9 | San Antonio | |
17 | Broward | Florida | 3,133.33 | 1,209.79 | 1,944,375 | 1,962,531 | 18,156 | 0.9 | Fort Lauderdale |
18 | Santa Clara | California | 3,341.34 | 1,290.10 | 1,936,259 | 1,877,592 | -58,667 | -3.0 | San Jose |
19 | Wayne | Michigan | 1,585.28 | 612.08 | 1,793,561 | 1,751,169 | -42,392 | -2.4 | Detroit |
20 | Middlesex | Massachusetts | 2,118.14 | 817.82 | 1,632,002 | 1,623,952 | -8,050 | -0.5 | Lowell and Cambridge |
21 | Alameda | California | 1,914.05 | 739.02 | 1,682,353 | 1,622,188 | -60,165 | -3.6 | Oakland |
22 | New York | New York | 59.13 | 22.83 | 1,694,251 | 1,597,451 | -96,800 | -5.7 | Manhattan, NYC |
23 | Sacramento | California | 2,498.42 | 964.64 | 1,584,169 | 1,584,288 | 119 | 0.0 | Sacramento |
24 | Philadelphia | Pennsylvania | 347.32 | 134.10 | 1,603,797 | 1,550,542 | -53,255 | -3.3 | Philadelphia |
25 | Hillsborough | Florida | 2,642.34 | 1,020.21 | 1,459,762 | 1,535,564 | 75,802 | 5.2 | Tampa |
26 | Palm Beach | 5,100.00 | 1,970.00 | 1,492,191 | 1,533,801 | 41,610 | 2.8 | West Palm Beach | |
27 | Suffolk | New York | 2,362.20 | 912.05 | 1,525,920 | 1,523,170 | -2,750 | -0.2 | Riverhead |
28 | Orange | Florida | 2,339.87 | 903.43 | 1,429,908 | 1,471,416 | 41,508 | 2.9 | Orlando |
29 | Nassau | New York | 737.41 | 284.72 | 1,395,774 | 1,381,715 | -14,059 | -1.0 | Mineola |
30 | Bronx | 109.03 | 42.10 | 1,472,654 | 1,356,476 | -116,178 | -7.9 | Bronx, NYC | |
31 | Travis | Texas | 2,564.61 | 990.20 | 1,290,188 | 1,334,961 | 44,773 | 3.5 | Austin |
32 | Franklin | Ohio | 1,378.36 | 532.19 | 1,323,807 | 1,326,063 | 2,256 | 0.2 | Columbus |
33 | Oakland | Michigan | 2,247.24 | 867.66 | 1,274,395 | 1,270,426 | -3,969 | -0.3 | Pontiac |
34 | Hennepin | Minnesota | 1,433.79 | 553.59 | 1,281,565 | 1,258,713 | -22,852 | -1.8 | Minneapolis |
35 | Cuyahoga | Ohio | 1,184.12 | 457.19 | 1,264,817 | 1,233,088 | -31,729 | -2.5 | Cleveland |
36 | Allegheny | Pennsylvania | 1,890.88 | 730.07 | 1,250,578 | 1,224,825 | -25,753 | -2.1 | Pittsburgh |
37 | Collin | Texas | 2,178.76 | 841.22 | 1,064,465 | 1,195,359 | 130,894 | 12.3 | McKinney |
38 | Wake | North Carolina | 2,163.21 | 835.22 | 1,129,410 | 1,190,275 | 60,865 | 5.4 | Raleigh |
39 | Salt Lake | Utah | 1,922.50 | 742.28 | 1,185,238 | 1,185,813 | 575 | 0.0 | Salt Lake City |
40 | Mecklenburg | North Carolina | 1,356.75 | 523.84 | 1,115,482 | 1,163,701 | 48,219 | 4.3 | Charlotte |
41 | Contra Costa | California | 1,854.27 | 715.94 | 1,165,927 | 1,155,025 | -10,902 | -0.9 | Martinez |
42 | Fairfax | Virginia | 1,012.60 | 390.97 | 1,150,309 | 1,141,878 | -8,431 | -0.7 | Fairfax |
43 | Fulton | Georgia | 1,363.98 | 526.63 | 1,066,710 | 1,079,105 | 12,395 | 1.2 | Atlanta |
44 | Pima | Arizona | 23,794.31 | 9,187.04 | 1,043,433 | 1,063,162 | 19,729 | 1.9 | Tucson |
45 | Montgomery | Maryland | 1,272.34 | 491.25 | 1,062,061 | 1,058,474 | -3,587 | -0.3 | Rockville |
46 | Duval | Florida | 1,974.07 | 762.19 | 995,567 | 1,030,822 | 35,255 | 3.5 | Jacksonville |
47 | Fresno | California | 15,431.13 | 5,957.99 | 1,008,654 | 1,017,162 | 8,508 | 0.8 | Fresno |
48 | Denton | Texas | 2,275.13 | 878.43 | 906,422 | 1,007,703 | 101,281 | 11.2 | Denton |
49 | Westchester | New York | 1,114.98 | 430.50 | 1,004,457 | 990,817 | -13,640 | -1.4 | White Plains |
50 | Honolulu | Hawaii | 1,555.92 | 600.74 | 1,016,508 | 989,408 | -27,100 | -2.7 | Honolulu |
51 | St. Louis | Missouri | 1,315.20 | 507.80 | 1,004,125 | 987,059 | -17,066 | -1.7 | Clayton |
52 | Gwinnett | Georgia | 1,114.69 | 430.38 | 957,062 | 983,526 | 26,464 | 2.8 | Lawrenceville |
53 | Capitol | Connecticut | 2,660.80 | 1,027.34 | 976,248 | 975,328 | -920 | -0.1 | Hartford |
54 | Marion | Indiana | 1,026.41 | 396.30 | 977,203 | 968,460 | -8,743 | -0.9 | Indianapolis |
55 | Pinellas | Florida | 709.14 | 273.80 | 959,107 | 961,596 | 2,489 | 0.3 | Clearwater |
56 | Bergen | New Jersey | 603.49 | 233.01 | 955,732 | 957,736 | 2,004 | 0.2 | Hackensack |
57 | Prince George's | Maryland | 1,250.16 | 482.69 | 967,201 | 947,430 | -19,771 | -2.0 | Upper Marlboro |
58 | Erie | New York | 2,700.56 | 1,042.69 | 954,236 | 946,147 | -8,089 | -0.8 | Buffalo |
59 | Pierce | Washington | 4,324.01 | 1,669.51 | 921,130 | 928,696 | 7,566 | 0.8 | Tacoma |
60 | DuPage | Illinois | 848.22 | 327.50 | 932,877 | 921,213 | -11,664 | -1.3 | Wheaton |
61 | Fort Bend | Texas | 2,292 | 885 | 822,779 | 916,778 | 93,999 | 11.4 | Richmond |
62 | Milwaukee | Wisconsin | 625.23 | 241.40 | 939,489 | 916,205 | -23,284 | -2.5 | Milwaukee |
63 | Kern | California | 21,061.57 | 8,131.92 | 909,235 | 913,820 | 4,585 | 0.5 | Bakersfield |
64 | Shelby | Tennessee | 1,976.61 | 763.17 | 929,744 | 910,042 | -19,702 | -2.1 | Memphis |
65 | Hidalgo | Texas | 4,068.52 | 1,570.87 | 870,781 | 898,471 | 27,690 | 3.2 | Edinburg |
66 | Macomb | Michigan | 1,241.18 | 479.22 | 881,217 | 875,101 | -6,116 | -0.7 | Mount Clemens |
67 | El Paso | Texas | 2,622.86 | 1,012.69 | 865,657 | 869,880 | 4,223 | 0.5 | El Paso |
68 | Montgomery | Pennsylvania | 1,251.07 | 483.04 | 856,553 | 868,742 | 12,189 | 1.4 | Norristown |
69 | Worcester | Massachusetts | 3,912.88 | 1,510.77 | 862,111 | 866,866 | 4,755 | 0.6 | Worcester |
70 | Middlesex | New Jersey | 800.08 | 308.91 | 863,162 | 863,623 | 461 | 0.1 | New Brunswick |
71 | Essex | 326.89 | 126.21 | 863,728 | 851,117 | -12,611 | -1.5 | Newark | |
72 | Snohomish | Washington | 5,406.01 | 2,087.27 | 827,957 | 844,761 | 16,804 | 2.0 | Everett |
73 | Baltimore | Maryland | 1,549.59 | 598.30 | 854,535 | 844,703 | -9,832 | -1.2 | Towson |
74 | Lee | Florida | 2,031.88 | 784.51 | 760,822 | 834,573 | 73,751 | 9.7 | Fort Myers |
75 | Ventura | California | 4,773.69 | 1,843.13 | 843,843 | 829,590 | -14,253 | -1.7 | Ventura |
76 | Hamilton | Ohio | 1,051.30 | 405.91 | 830,639 | 827,058 | -3,581 | -0.4 | Cincinnati |
77 | Polk | Florida | 4,660 | 1,798 | 725,046 | 818,330 | 93,284 | 12.9 | Bartow |
78 | Essex | Massachusetts | 1,275.73 | 492.56 | 809,829 | 810,089 | 260 | 0.0 | Salem and Lawrence |
79 | San Francisco | California | 121.40 | 46.87 | 873,965 | 808,988 | -64,977 | -7.4 | San Francisco |
80 | Oklahoma | Oklahoma | 1,835.83 | 708.82 | 796,292 | 808,866 | 12,574 | 1.6 | Oklahoma City |
81 | San Joaquin | California | 3,603.51 | 1,391.32 | 779,233 | 800,965 | 21,732 | 2.8 | Stockton |
82 | Multnomah | Oregon | 1,117.05 | 431.30 | 815,428 | 789,698 | -25,730 | -3.2 | Portland |
83 | Cobb | Georgia | 879.43 | 339.55 | 766,149 | 776,743 | 10,594 | 1.4 | Marietta |
84 | Jefferson | Kentucky | 985.27 | 380.42 | 782,969 | 772,144 | -10,825 | -1.4 | Louisville |
85 | Suffolk | Massachusetts | 150.62 | 58.15 | 797,936 | 768,425 | -29,511 | -3.7 | Boston |
86 | DeKalb | Georgia | 693.03 | 267.58 | 764,382 | 762,992 | -1,390 | -0.2 | Decatur |
87 | Monroe | New York | 1,702.15 | 657.21 | 759,443 | 748,482 | -10,961 | -1.4 | Rochester |
88 | El Paso | Colorado | 5,508.39 | 2,126.80 | 730,395 | 744,215 | 13,820 | 1.9 | Colorado Springs |
89 | Norfolk | Massachusetts | 1,025.91 | 396.11 | 725,981 | 727,473 | 1,492 | 0.2 | Dedham |
90 | San Mateo | California | 1,161.37 | 448.41 | 764,442 | 726,353 | -38,089 | -5.0 | Redwood City |
91 | Utah | Utah | 5,188.91 | 2,003.45 | 659,399 | 719,174 | 59,775 | 9.1 | Provo |
92 | Jackson | Missouri | 1,565.55 | 604.46 | 717,204 | 718,560 | 1,356 | 0.2 | Independence and Kansas City |
93 | Denver | Colorado | 401.36 | 154.97 | 715,522 | 716,577 | 1,055 | 0.1 | Denver |
94 | Davidson | Tennessee | 1,305.44 | 504.03 | 715,884 | 712,334 | -3,550 | -0.5 | Nashville |
95 | Montgomery | Texas | 2,699.23 | 1,042.18 | 620,443 | 711,354 | 90,911 | 14.7 | Conroe |
96 | Lake | Illinois | 1,149.10 | 443.67 | 714,342 | 708,760 | -5,582 | -0.8 | Waukegan |
97 | Hudson | New Jersey | 119.63 | 46.19 | 724,854 | 705,472 | -19,382 | -2.7 | Jersey City |
98 | Will | Illinois | 2,167.58 | 836.91 | 696,355 | 700,728 | 4,373 | 0.6 | Joliet |
99 | Williamson | Texas | 2,889.99 | 1,115.83 | 609,017 | 697,191 | 88,174 | 14.5 | Georgetown |
100 | Tulsa | Oklahoma | 1,476.86 | 570.22 | 669,279 | 682,868 | 13,589 | 2.0 | Tulsa |
Gallery
- Downtown Los Angeles, county seat of Los Angeles County, California, the most populous county in the United States
- Downtown Chicago in Cook County, Illinois, the second-most populous county in the United States
- Downtown Houston in Harris County, Texas, the third-most populous county in the United States
- Phoenix, Arizona, county seat of the Maricopa County, Arizona, the nation's fourth-most populous county
- Downtown San Diego, California. San Diego County is the fifth-most populous county in the United States
- South Coast Metro district in Orange County, California,
the sixth-most populous county in the United States - Downtown Miami in Miami-Dade County, the largest county in Florida and county seat of the seventh-most populous county in the United States
- Uptown, Dallas with Downtown Dallas on the end, in Dallas County, Texas, the eighth-most populous county in the United States
- Brooklyn in Kings County, New York, the ninth-most populous county in the United States
- Riverside, California, the county seat of Riverside County, California, the tenth-most populous county in the United States
References
- "More Counties Saw Population Gains in 2023". United States Census Bureau. Retrieved March 14, 2024.
- "This Is Your City and County of Honolulu Government". City and County of Honolulu. Archived from the original on January 20, 2008. Retrieved January 23, 2008.
- "City and County Organizational Chart". City and County of San Francisco. Archived from the original on February 3, 2008. Retrieved January 23, 2008.
- "Active Colorado Municipalities as of January 26, 2010". Colorado Department of Local Affairs. Archived from the original on December 12, 2009. Retrieved January 26, 2010.
- GeoHive - the United States of America - US States and Counties Archived April 30, 2012, at the Wayback Machine (attached Excel spreadsheet)
- The area in square kilometers of the column to the left divided by 2.589988110336 (1.6093442).
This is a list of the 100 most populous of the 3 144 counties in the United States based on the national decennial US census conducted on April 1 2020 and vintage Census population estimates for July 1 2023 A map of the counties and county equivalents of the United States The 100 most populous counties are highlighted with counties having more than one million residents in orange and counties having fewer than one million residents in green based on the results of the April 1 2020 United States census Many of the counties on the list include major cities or metropolitan areas in all parts of the United States Six of the listed counties have consolidated city and county government namely the City and County of Honolulu Metropolitan Government of Nashville and Davidson County Tennessee City and County of Philadelphia City and County of San Francisco City of Jacksonville and Duval County and City and County of Denver Kings County Queens County New York County Bronx County and Richmond County are coterminous with the respective boroughs of New York City they fall under the jurisdiction of the combined Government of New York City Independent cities are not counted Many of the most populous counties listed are in Southern California Texas and New York and roughly correspond to several of the most populous cities or municipalities in the United States Counties in the Western United States are typically larger by area and therefore often have higher absolute populations even with comparable population densities ListThis list includes the most populous US counties sorted according to both the 2020 official enumeration and 2023 vintage population estimates by the United States Census Bureau USCB Rank County State Land area April 1 2020 census July 1 2023 estimates Mid 2020 to mid 2023 change County seatkm2 mi2 absolute 1 Los Angeles California 10 509 87 4 057 88 10 014 009 9 663 345 350 664 3 5 Los Angeles2 Cook Illinois 2 448 38 945 33 5 275 541 5 087 072 188 469 3 6 Chicago3 Harris Texas 4 411 99 1 703 48 4 731 145 4 835 125 103 980 2 2 Houston4 Maricopa Arizona 23 828 26 9 200 14 4 420 568 4 585 871 165 303 3 7 Phoenix5 San Diego California 10 895 12 4 206 63 3 298 634 3 269 973 28 661 0 9 San Diego6 Orange 2 047 56 790 57 3 186 989 3 135 755 51 234 1 6 Santa Ana7 Miami Dade Florida 4 915 06 1 897 72 2 701 767 2 686 867 14 900 0 6 Miami8 Dallas Texas 2 256 60 871 28 2 613 539 2 606 358 7 181 0 3 Dallas9 Kings New York 183 41 70 82 2 736 074 2 561 225 174 849 6 4 Brooklyn NYC10 Riverside California 18 664 70 7 206 48 2 418 185 2 492 442 74 257 3 1 Riverside11 Clark Nevada 20 438 71 7 891 43 2 265 461 2 336 573 71 112 3 1 Las Vegas12 King Washington 5 479 29 2 115 57 2 269 675 2 271 380 1 705 0 1 Seattle13 Queens New York 281 10 108 53 2 405 464 2 252 196 153 268 6 8 Queens NYC14 San Bernardino California 51 947 23 20 056 94 2 181 654 2 195 611 13 957 0 6 San Bernardino15 Tarrant Texas 2 236 74 863 61 2 110 640 2 182 947 72 307 3 4 Fort Worth16 Bexar 3 211 12 1 239 82 2 009 324 2 087 679 78 355 3 9 San Antonio17 Broward Florida 3 133 33 1 209 79 1 944 375 1 962 531 18 156 0 9 Fort Lauderdale18 Santa Clara California 3 341 34 1 290 10 1 936 259 1 877 592 58 667 3 0 San Jose19 Wayne Michigan 1 585 28 612 08 1 793 561 1 751 169 42 392 2 4 Detroit20 Middlesex Massachusetts 2 118 14 817 82 1 632 002 1 623 952 8 050 0 5 Lowell and Cambridge21 Alameda California 1 914 05 739 02 1 682 353 1 622 188 60 165 3 6 Oakland22 New York New York 59 13 22 83 1 694 251 1 597 451 96 800 5 7 Manhattan NYC23 Sacramento California 2 498 42 964 64 1 584 169 1 584 288 119 0 0 Sacramento24 Philadelphia Pennsylvania 347 32 134 10 1 603 797 1 550 542 53 255 3 3 Philadelphia25 Hillsborough Florida 2 642 34 1 020 21 1 459 762 1 535 564 75 802 5 2 Tampa26 Palm Beach 5 100 00 1 970 00 1 492 191 1 533 801 41 610 2 8 West Palm Beach27 Suffolk New York 2 362 20 912 05 1 525 920 1 523 170 2 750 0 2 Riverhead28 Orange Florida 2 339 87 903 43 1 429 908 1 471 416 41 508 2 9 Orlando29 Nassau New York 737 41 284 72 1 395 774 1 381 715 14 059 1 0 Mineola30 Bronx 109 03 42 10 1 472 654 1 356 476 116 178 7 9 Bronx NYC31 Travis Texas 2 564 61 990 20 1 290 188 1 334 961 44 773 3 5 Austin32 Franklin Ohio 1 378 36 532 19 1 323 807 1 326 063 2 256 0 2 Columbus33 Oakland Michigan 2 247 24 867 66 1 274 395 1 270 426 3 969 0 3 Pontiac34 Hennepin Minnesota 1 433 79 553 59 1 281 565 1 258 713 22 852 1 8 Minneapolis35 Cuyahoga Ohio 1 184 12 457 19 1 264 817 1 233 088 31 729 2 5 Cleveland36 Allegheny Pennsylvania 1 890 88 730 07 1 250 578 1 224 825 25 753 2 1 Pittsburgh37 Collin Texas 2 178 76 841 22 1 064 465 1 195 359 130 894 12 3 McKinney38 Wake North Carolina 2 163 21 835 22 1 129 410 1 190 275 60 865 5 4 Raleigh39 Salt Lake Utah 1 922 50 742 28 1 185 238 1 185 813 575 0 0 Salt Lake City40 Mecklenburg North Carolina 1 356 75 523 84 1 115 482 1 163 701 48 219 4 3 Charlotte41 Contra Costa California 1 854 27 715 94 1 165 927 1 155 025 10 902 0 9 Martinez42 Fairfax Virginia 1 012 60 390 97 1 150 309 1 141 878 8 431 0 7 Fairfax43 Fulton Georgia 1 363 98 526 63 1 066 710 1 079 105 12 395 1 2 Atlanta44 Pima Arizona 23 794 31 9 187 04 1 043 433 1 063 162 19 729 1 9 Tucson45 Montgomery Maryland 1 272 34 491 25 1 062 061 1 058 474 3 587 0 3 Rockville46 Duval Florida 1 974 07 762 19 995 567 1 030 822 35 255 3 5 Jacksonville47 Fresno California 15 431 13 5 957 99 1 008 654 1 017 162 8 508 0 8 Fresno48 Denton Texas 2 275 13 878 43 906 422 1 007 703 101 281 11 2 Denton49 Westchester New York 1 114 98 430 50 1 004 457 990 817 13 640 1 4 White Plains50 Honolulu Hawaii 1 555 92 600 74 1 016 508 989 408 27 100 2 7 Honolulu51 St Louis Missouri 1 315 20 507 80 1 004 125 987 059 17 066 1 7 Clayton52 Gwinnett Georgia 1 114 69 430 38 957 062 983 526 26 464 2 8 Lawrenceville53 Capitol Connecticut 2 660 80 1 027 34 976 248 975 328 920 0 1 Hartford54 Marion Indiana 1 026 41 396 30 977 203 968 460 8 743 0 9 Indianapolis55 Pinellas Florida 709 14 273 80 959 107 961 596 2 489 0 3 Clearwater56 Bergen New Jersey 603 49 233 01 955 732 957 736 2 004 0 2 Hackensack57 Prince George s Maryland 1 250 16 482 69 967 201 947 430 19 771 2 0 Upper Marlboro58 Erie New York 2 700 56 1 042 69 954 236 946 147 8 089 0 8 Buffalo59 Pierce Washington 4 324 01 1 669 51 921 130 928 696 7 566 0 8 Tacoma60 DuPage Illinois 848 22 327 50 932 877 921 213 11 664 1 3 Wheaton61 Fort Bend Texas 2 292 885 822 779 916 778 93 999 11 4 Richmond62 Milwaukee Wisconsin 625 23 241 40 939 489 916 205 23 284 2 5 Milwaukee63 Kern California 21 061 57 8 131 92 909 235 913 820 4 585 0 5 Bakersfield64 Shelby Tennessee 1 976 61 763 17 929 744 910 042 19 702 2 1 Memphis65 Hidalgo Texas 4 068 52 1 570 87 870 781 898 471 27 690 3 2 Edinburg66 Macomb Michigan 1 241 18 479 22 881 217 875 101 6 116 0 7 Mount Clemens67 El Paso Texas 2 622 86 1 012 69 865 657 869 880 4 223 0 5 El Paso68 Montgomery Pennsylvania 1 251 07 483 04 856 553 868 742 12 189 1 4 Norristown69 Worcester Massachusetts 3 912 88 1 510 77 862 111 866 866 4 755 0 6 Worcester70 Middlesex New Jersey 800 08 308 91 863 162 863 623 461 0 1 New Brunswick71 Essex 326 89 126 21 863 728 851 117 12 611 1 5 Newark72 Snohomish Washington 5 406 01 2 087 27 827 957 844 761 16 804 2 0 Everett73 Baltimore Maryland 1 549 59 598 30 854 535 844 703 9 832 1 2 Towson74 Lee Florida 2 031 88 784 51 760 822 834 573 73 751 9 7 Fort Myers75 Ventura California 4 773 69 1 843 13 843 843 829 590 14 253 1 7 Ventura76 Hamilton Ohio 1 051 30 405 91 830 639 827 058 3 581 0 4 Cincinnati77 Polk Florida 4 660 1 798 725 046 818 330 93 284 12 9 Bartow78 Essex Massachusetts 1 275 73 492 56 809 829 810 089 260 0 0 Salem and Lawrence79 San Francisco California 121 40 46 87 873 965 808 988 64 977 7 4 San Francisco80 Oklahoma Oklahoma 1 835 83 708 82 796 292 808 866 12 574 1 6 Oklahoma City81 San Joaquin California 3 603 51 1 391 32 779 233 800 965 21 732 2 8 Stockton82 Multnomah Oregon 1 117 05 431 30 815 428 789 698 25 730 3 2 Portland83 Cobb Georgia 879 43 339 55 766 149 776 743 10 594 1 4 Marietta84 Jefferson Kentucky 985 27 380 42 782 969 772 144 10 825 1 4 Louisville85 Suffolk Massachusetts 150 62 58 15 797 936 768 425 29 511 3 7 Boston86 DeKalb Georgia 693 03 267 58 764 382 762 992 1 390 0 2 Decatur87 Monroe New York 1 702 15 657 21 759 443 748 482 10 961 1 4 Rochester88 El Paso Colorado 5 508 39 2 126 80 730 395 744 215 13 820 1 9 Colorado Springs89 Norfolk Massachusetts 1 025 91 396 11 725 981 727 473 1 492 0 2 Dedham90 San Mateo California 1 161 37 448 41 764 442 726 353 38 089 5 0 Redwood City91 Utah Utah 5 188 91 2 003 45 659 399 719 174 59 775 9 1 Provo92 Jackson Missouri 1 565 55 604 46 717 204 718 560 1 356 0 2 Independence and Kansas City93 Denver Colorado 401 36 154 97 715 522 716 577 1 055 0 1 Denver94 Davidson Tennessee 1 305 44 504 03 715 884 712 334 3 550 0 5 Nashville95 Montgomery Texas 2 699 23 1 042 18 620 443 711 354 90 911 14 7 Conroe96 Lake Illinois 1 149 10 443 67 714 342 708 760 5 582 0 8 Waukegan97 Hudson New Jersey 119 63 46 19 724 854 705 472 19 382 2 7 Jersey City98 Will Illinois 2 167 58 836 91 696 355 700 728 4 373 0 6 Joliet99 Williamson Texas 2 889 99 1 115 83 609 017 697 191 88 174 14 5 Georgetown100 Tulsa Oklahoma 1 476 86 570 22 669 279 682 868 13 589 2 0 TulsaGalleryDowntown Los Angeles county seat of Los Angeles County California the most populous county in the United States Downtown Chicago in Cook County Illinois the second most populous county in the United States Downtown Houston in Harris County Texas the third most populous county in the United States Phoenix Arizona county seat of the Maricopa County Arizona the nation s fourth most populous county Downtown San Diego California San Diego County is the fifth most populous county in the United States South Coast Metro district in Orange County California the sixth most populous county in the United States Downtown Miami in Miami Dade County the largest county in Florida and county seat of the seventh most populous county in the United States Uptown Dallas with Downtown Dallas on the end in Dallas County Texas the eighth most populous county in the United States Brooklyn in Kings County New York the ninth most populous county in the United States Riverside California the county seat of Riverside County California the tenth most populous county in the United StatesReferences More Counties Saw Population Gains in 2023 United States Census Bureau Retrieved March 14 2024 This Is Your City and County of Honolulu Government City and County of Honolulu Archived from the original on January 20 2008 Retrieved January 23 2008 City and County Organizational Chart City and County of San Francisco Archived from the original on February 3 2008 Retrieved January 23 2008 Active Colorado Municipalities as of January 26 2010 Colorado Department of Local Affairs Archived from the original on December 12 2009 Retrieved January 26 2010 GeoHive the United States of America US States and Counties Archived April 30 2012 at the Wayback Machine attached Excel spreadsheet The area in square kilometers of the column to the left divided by 2 589988110336 1 6093442